What it is: Rusk Thermal Str8 Protective Shampoo is a gentle daily use hair and scalp cleanser enriched with UVA/UVB sunscreens and a balanced blend of conditioners that protects and conditions the hair where most needed. What it does: These conditioners leave the hair smooth straight sleek and shiny. Product Options Available are as follows: Size : 33 oz / liter - Rusk Thermal Str8 Protective Shampoo; Size : 8 oz - Rusk Thermal Str8 Protective Shampoo;